[WebAssembly] Use __stack_pointer global when writing wasm binary

This ensures that symbolic relocations are generated for stack
pointer manipulations.

These relocations are of type R_WEBASSEMBLY_GLOBAL_INDEX_LEB.
This change also adds support for reading relocations of this
type in WasmObjectFile.cpp.

Since its a globally imported symbol this does mean that
the get_global/set_global instruction won't be valid until
the objects are linked that global used in no longer an
imported global.

Differential Revision: https://reviews.llvm.org/D34172

llvm-svn: 305616

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.cpp b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.cpp
index 9fd3ec81c25..9580eeaa33d 100644
--- a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.cpp
+++ b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.cpp
@@ -74,7 +74,7 @@ static MCInstPrinter *createMCInstPrinter(const Triple & /*T*/,
 static MCCodeEmitter *createCodeEmitter(const MCInstrInfo &MCII,
                                         const MCRegisterInfo & /*MRI*/,
                                         MCContext &Ctx) {
-  return createWebAssemblyMCCodeEmitter(MCII, Ctx);
+  return createWebAssemblyMCCodeEmitter(MCII);
 }
 
 static MCAsmBackend *createAsmBackend(const Target & /*T*/,